Circuit board holder



FIG. 1 is a perspective view of the circuit board holder;

FIG. 2 is a top view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a back thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a bottom view thereof.

The ornamental design for a circuit board holder, as shown anddescribed.